added shitty healthbar to the GUI.

client/src/main/java/nl/andrewl/aos2_client/Client.java

@@ -169,6 +169,8 @@ public class Client implements Runnable {
 					projectiles.remove(p.getId());
 				}
 			}
+		} else if (msg instanceof ClientHealthMessage healthMessage) {
+			myPlayer.setHealth(healthMessage.health());
 		}
 	}
 

client/src/main/java/nl/andrewl/aos2_client/model/ClientPlayer.java

@@ -9,12 +9,14 @@ import java.util.ArrayList;
 
 public class ClientPlayer extends Player {
 	private final Inventory inventory;
+	private float health;
 
 	private final Matrix4f heldItemTransform = new Matrix4f();
 	private final float[] heldItemTransformData = new float[16];
 
 	public ClientPlayer(int id, String username) {
 		super(id, username);
+		this.health = 1;
 		this.inventory = new Inventory(new ArrayList<>(), 0);
 	}
 
@@ -28,6 +30,14 @@ public class ClientPlayer extends Player {
 		this.inventory.setSelectedIndex(inv.getSelectedIndex());
 	}
 
+	public float getHealth() {
+		return health;
+	}
+
+	public void setHealth(float health) {
+		this.health = health;
+	}
+
 	public void updateHeldItemTransform(Camera cam) {
 		heldItemTransform.identity()
 				.translate(cam.getPosition())

client/src/main/java/nl/andrewl/aos2_client/render/GameRenderer.java

@@ -51,6 +51,8 @@ public class GameRenderer {
 	private GUITexture crosshairTexture;
 	private GUITexture clipTexture;
 	private GUITexture bulletTexture;
+	private GUITexture healthBarRedTexture;
+	private GUITexture healthBarGreenTexture;
 
 	private long windowHandle;
 	private int screenWidth = 800;
@@ -123,9 +125,13 @@ public class GameRenderer {
 		crosshairTexture = new GUITexture("gui/crosshair.png");
 		clipTexture = new GUITexture("gui/clip.png");
 		bulletTexture = new GUITexture("gui/bullet.png");
+		healthBarRedTexture = new GUITexture("gui/health-red.png");
+		healthBarGreenTexture = new GUITexture("gui/health-green.png");
 		guiRenderer.addTexture("crosshair", crosshairTexture);
 		guiRenderer.addTexture("clip", clipTexture);
 		guiRenderer.addTexture("bullet", bulletTexture);
+		guiRenderer.addTexture("health-red", healthBarRedTexture);
+		guiRenderer.addTexture("health-green", healthBarGreenTexture);
 		log.debug("Initialized GUI renderer.");
 
 		this.modelRenderer = new ModelRenderer();
@@ -255,6 +261,21 @@ public class GameRenderer {
 				);
 			}
 		}
+		// Render the player's health.
+		guiRenderer.draw(
+				healthBarRedTexture,
+				healthBarRedTexture.getIdealScaleX(64, screenWidth),
+				healthBarRedTexture.getIdealScaleY(16, screenHeight),
+				-0.90f,
+				-0.90f
+		);
+		guiRenderer.draw(
+				healthBarGreenTexture,
+				healthBarGreenTexture.getIdealScaleX(64 * client.getMyPlayer().getHealth(), screenWidth),
+				healthBarGreenTexture.getIdealScaleY(16, screenHeight),
+				-0.90f,
+				-0.90f
+		);
 		guiRenderer.end();
 
 		glfwSwapBuffers(windowHandle);

server/src/main/java/nl/andrewl/aos2_server/PlayerManager.java

@@ -76,6 +76,10 @@ public class PlayerManager {
 		return clientHandlers.get(id);
 	}
 
+	public ClientCommunicationHandler getHandler(ServerPlayer player) {
+		return clientHandlers.get(player.getId());
+	}
+
 	public Collection<ClientCommunicationHandler> getHandlers() {
 		return Collections.unmodifiableCollection(clientHandlers.values());
 	}

server/src/main/java/nl/andrewl/aos2_server/ProjectileManager.java

@@ -6,6 +6,7 @@ import nl.andrewl.aos_core.Directions;
 import nl.andrewl.aos_core.model.Player;
 import nl.andrewl.aos_core.model.Projectile;
 import nl.andrewl.aos_core.model.world.Hit;
+import nl.andrewl.aos_core.net.client.ClientHealthMessage;
 import nl.andrewl.aos_core.net.world.ChunkUpdateMessage;
 import org.joml.Matrix4f;
 import org.joml.Vector3f;
@@ -122,6 +123,8 @@ public class ProjectileManager {
 			if (hitPlayer.getHealth() == 0) {
 				System.out.println("Player killed!!!");
 				server.getPlayerManager().playerKilled(hitPlayer);
+			} else {
+				server.getPlayerManager().getHandler(hitPlayer).sendDatagramPacket(new ClientHealthMessage(hitPlayer.getHealth()));
 			}
 			deleteProjectile(projectile);
 		} else {